static void handle_success(struct icem *icem, struct ice_candpair *cp,
const struct sa *laddr)
{
if (!icem_cand_find(&icem->lcandl, cp->lcand->compid, laddr)) {
int err;
icecomp_printf(cp->comp, "adding local PRFLX Candidate: %J\n",
laddr);
err = icem_lcand_add(icem, cp->lcand,
ICE_CAND_TYPE_PRFLX, laddr);
if (err) {
DEBUG_WARNING("failed to add PRFLX: %m\n", err);
}
}
cp = construct_valid_pair(icem, cp, laddr, &cp->rcand->addr);
if (!cp) {
DEBUG_WARNING("{%s} no valid candidate pair for %J\n",
icem->name, laddr);
return;
}
icem_candpair_make_valid(cp);
icem_comp_set_selected(cp->comp, cp);
cp->nominated = true;
#if 0
/* stop conncheck now -- conclude */
icem_conncheck_stop(icem, 0);
#endif
}
/* 8. Concluding ICE Processing */
static void concluding_ice(struct icem_comp *comp)
{
struct candpair *cp;
if (!comp || comp->concluded)
return;
/* pick the best candidate pair, highest priority */
cp = icem_candpair_find_st(&comp->icem->validl, comp->id,
CANDPAIR_SUCCEEDED);
if (!cp) {
DEBUG_WARNING("{%s.%u} conclude: no valid candpair found"
" (validlist=%u)\n",
comp->icem->name, comp->id,
list_count(&comp->icem->validl));
return;
}
icem_comp_set_selected(comp, cp);
if (comp->icem->ice->conf.nom == ICE_NOMINATION_REGULAR) {
/* send STUN request with USE_CAND flag via triggered qeueue */
(void)icem_conncheck_send(cp, true, true);
icem_conncheck_schedule_check(comp->icem);
}
comp->concluded = true;
}
static int handle_stun(struct ice *ice, struct icem *icem,
struct icem_comp *comp, const struct sa *src,
uint32_t prio, bool use_cand, bool tunnel)
{
struct cand *lcand = NULL, *rcand;
struct candpair *cp = NULL;
int err;
rcand = icem_cand_find(&icem->rcandl, comp->id, src);
if (!rcand) {
err = icem_rcand_add_prflx(&rcand, icem, comp->id, prio, src);
if (err)
return err;
}
cp = icem_candpair_find_rcand(icem, rcand);
if (cp)
lcand = cp->lcand;
else
lcand = icem_lcand_find_checklist(icem, comp->id);
if (!lcand) {
DEBUG_WARNING("{%s.%u} no local candidate"
" (checklist=%u) (src=%J)\n",
icem->name, comp->id,
list_count(&icem->checkl), src);
return 0;
}
if (ICE_MODE_FULL == ice->lmode)
triggered_check(icem, lcand, rcand);
if (!cp) {
cp = icem_candpair_find_rcand(icem, rcand);
if (!cp) {
DEBUG_WARNING("{%s.%u} candidate pair not found:"
" source=%J\n",
icem->name, comp->id, src);
return 0;
}
}
#if ICE_TRACE
icecomp_printf(comp, "Rx Binding Request from %J via %s"
" (candpair=%s) %s\n",
src, tunnel ? "Tunnel" : "Socket",
cp ? ice_candpair_state2name(cp->state) : "n/a",
use_cand ? "[USE]" : "");
#else
(void)tunnel;
#endif
/* 7.2.1.5. Updating the Nominated Flag */
if (use_cand) {
if (ice->lrole == ROLE_CONTROLLED) {
if (cp->state == CANDPAIR_SUCCEEDED) {
cp->nominated = true;
icecomp_printf(comp, "setting NOMINATED"
" flag on candpair [%H]\n",
icem_candpair_debug, cp);
}
}
/* Cancel conncheck. Choose Selected Pair */
icem_candpair_make_valid(cp);
if (ice->conf.nom == ICE_NOMINATION_REGULAR) {
icem_candpair_cancel(cp);
icem_comp_set_selected(comp, cp);
}
}
return 0;
}